ULTRA-BREATHABLE: Take comfort knowing our breathable crib mattress protector pad is the ideal solution for potty training or adding an extra layer of comfort to your crib mattress. Our breathe-thru spacer layer adds 3/8” of air circulation over the waterproof layer, making it one of the only breathable yet still waterproof pads available. The washable waterproof pad measures 52" x 28". | 100% WATERPROOF: Our waterproof lining preserves and protects your baby’s mattress from moisture, leaks, and potential mold, so you can feel secure that your crib mattress remains clean and healthy even when accidents happen. | MACHINE WASHABLE: Designed with convenience in mind, the breathable crib mattress pad is machine washable, allowing you to quickly and readily clean up any mess without the need for harsh chemical detergents, making it the perfect choice for busy parents and babies! | SLEEP-POTTY TRAINING PARTNER : With easy cleanup and machine washable feature, bed time potty accidents are no longer a worry creating a cozy, dry, and healthy sleep | UNIVERSAL FITTED SKIRT: Our mitered corners provide an enhanced stretch that fits snugly around your crib mattress for a secure and foolproof fit. Plus, our luxurious quilted layer is designed to add extra comfort and better temperature regulation to your baby's mattress while still being breathable.